Pile-wire.



R. A. STEVENS.

FILE WIRE.

APPLICATION FILED JUNE 17,1912.

1 12531,, Patented Jan.19,1915.

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WITNESSES: LVVENTOR. W Q4 (1&4 fly/44 J g THE NORRIS PETERS C0 F'HOTO-LITHO. WASHINGTON. D. c

QINTTE srrn ranrrr err-ro ROYAL A. STEVENS, 0F LOWELL, MASSACHUSETTS, AESIGNOR OF ONE HALF T0 JAMES F. GORDON, OE LO'WELL, MASSACHUSETTS.

PILE-WIRE.

insane.

Specification of Letters Patent.

Patented Jan. 11%, 1915.

To all whom it may concern:

Be it known that I, ROYAL A. STEVENS, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Pile-Wires, of which the following 7 is a specification.

This invention relates to pile-wires, such as are used in, looms for making pile fabrics, the wires sometimes forming the loops or pile which project from the face of the fabric as in uncut velvet or Brussels carpet and sometimes being provided witl knives which cut through the tops of the loops when the wires are withdrawn from them, as in making out velvet 0r Wilton carpets. In either case the pile-wire comprises a head of thin or sheet metal and a flat tempered steel wire, one end of which is laid in a groove or slot in said head and secured to said head, more commonly by brazing, destroying the temper of the wire and rendering it liable in use to be broken at the head, after which both the head and the wire are practically useless. Sometimes the wire is secured to the head wholly or partly by solder, sometimes by means of rivets or clamps and rivets. There is a great strain on the wire when it is being drawn from the loops of the fabric and if the wire proper or blade is broken or separated from the head, as frequently happens, the device must be taken to the repair shop if capable of being repaired or if not, must be thrown away.

1 The ob 'ect of this invention is to furnish a means of securing the head and wire proper or blade to each other, such that said wire or blade may be tempered uniformly throughout in such a manner as to prevent bending of the blade and almost entirely obviate the danger of breaking it and at the same time to enable the loom-fixer to substitute a new head, wire or blade for the broken one in the weaving-room, immediately, thereby lessening the loss of time and cost of repairs.

in the accompanying drawing, Figure 1 is a side elevation of a pile-wire head and the adjacent part of a dovetail wire held in a dovetail groove in said head by a segmental disk lock. Fig. 2, a vertical cross-section on the line 2 2 in Fig.1; Fig. 3, like Fig. 2, except that the lock is represented as pro vidrd with a projection which may be turned to engage a notch in the wire or out of engagement therewith; Fig. 4:, a vertical crossseotion on the line l 4: in Fig. 3; Fig. 5, side elevation of a n1odification,in which two rotary locks are used with a wire rectangular in cross-section, except at the points engaged by the lock, Fig. 6, a vertical crosssection on the line 6 6 in Fig. 5.

In Fig. l the head A of the pile-wire is of the usual construction, except as hereinafter stated and is provided with a dovetail groove a which receives and fits a clovetail shank Z) of the wire B, the end of the wire farthest from the head A being of any usual shape, that is, either with or without a pile-cutting edge, said free end not being shown, as my invention relates merely to securing the wire in the head. In Fig. 1 a hole a circular in cross-section and with enlarged or flaring ends is punched or otherwise formed in the head and partly within the groove which receives the pile-wire and a plug C circular in cross-section is arranged in said hole a the ends of the plug being spread to fit the flaring ends of the hole and retain said plug therein with considerable friction, in order that the plug may not be easily jarred or turned out of position. The plug is provided with a central hole 0 to receive a key or may be slotted across the top, as shown at c in Fig, 5 to be engaged by a screw-driver. The top of one side of the plug C is cut away to the bottom of the groove a sufficiently to allow the wire to be inserted and drawn out of the head when the plug is turned to bring this out portion parallel with said groove. T he wire on the side next the plug or look C is provided with a concave recess Z2 which fits the curved surface of said plug or lock, so that when said lock is turned into said recess the wire cannot be drawn out of the head. At the inner end of the groove a which receives the pile-wire is a hole a having a diameter as great as the greatest width of said groove, for the purpose of clearance in forming the groove and when the pile-wire is locked in the groove, the inner end of said pile-wire may extend entirely across this opening, as shown in Fig.

the circular hole in Fig. 3 which receives the.

7 1. The ends of the lock in Fig. 1 as. in all the Wire to be drawn from said groove. In

other respects the devices shown in Figs. 8 and t are like those previously described and indicated by the same letters of refer ence,1it being understood, of course that plug is vvhollyi'outside of the groove.

7 ln l igs. 5 and 6 the holes a a which receive the locks; are partly Within the groove Wlnchreceives the wire, there being two, such locks, one above andv the other below said wire andthe wirefB. and said groove being rectangular in cross-section,

said Wire being provided at'the open side of the groove w th concave flzcesses 6 which do. not however extend through the entire thickness ofthe wire and the locks being providedwith enlarged flanges-which 'entersai'd recesses If b which thus notonly] prevent a vertical movement of the Wire,

but also hold the Wire in the groove by' overlapping the bottom portion of these con- 7 GENE recesses.

I claim as my invention 7 1. The combination of a pile-wire head provided with a longitudinal groove and With a hole, a Wire arranged in said. groove and provided with a recess and a lock capable 40 of turning in said hole, to engage said recess and: to retain said Wire in said groove or to release said Wire.

2. The combination of a pile-wire head provided with alongitudinal groove and with a hole, a wire arranged in said groove and provided with a recess and a lock capableof turning in said hole to engage said recess-to. prevent a longitudinal movement of said wire intsaid groove. 7 V

3. The combination of a pile-wire head pro *ided itha groove and with a hole, and wire having a fiat end portion arranged in said groove and having a recess, and beiiig narrower on its outer face than at the 55 bottom ,o'i said groove; and a lock turning in said; hole to engage said recessto'prevent displacement, of said wire.

In witnesswhereof, I have vaiiizred my signature inpresenceof two witnesses.

' ROYALA. STEVENS. V j Witnesses: r V

, AL nR'r, M. MOORE,

WILLIA F. Comm.

Copies of this patent may be obtainedfor five cents each, byl ad clressing the Commissioner of Patents,

" Washington, D; G. l V 

